s1 = {1, 3, 5, 6}
s2 = {2, 5, 6}

print("S1|S2 = {}".format(s1|s2))
print("S1&S2 = {}".format(s1&s2))
print("S1^S2 = {}".format(s1^s2))
print("S1-S2 = {}".format(s1-s2))
